The insect known as the marmorated stink bug (Stal, 1855) is part of the Hemiptera order and of the Pentatomidae family. At present, it has become extremely well known in Europe, due to its expansion capacity, both as a surface of ecosystems or agro-ecosystems and as a host plant range. The place of origin is in Asia, from where it has grown rapidly throughout the world. A current spreading picture on the globe shows some extended widespread having limits between latitudes of 75˚N and 55˚S. It is present in the most diverse climatic conditions, from tropical and sub-tropical areas to cold temperate zones. Host plants are among the most diverse crops (corn, soybean), vegetables, fruit trees, orchards in ornamental plants. By this paper we have proposed to look for the cause of enlargement and found that in Europe the expansion was made from the west to the east but without a concrete cause nor the climatic conditions, nor the present plants are not certified factors to justify the extremely rapid spread. In the two countries analyzed, Romania and Italy, the only factor is sitting around the latitude of 45˚N, because the climate conditions are diverse (from the Mediterranean climate to the temperate continental climate). The adult samples analyzed in September and October 2018 and previously collected showed a variable body length between 13.9 and 15.5 mm. There was no color variation among individuals. The proportion of males was higher in samples (60%). Considering the above, limiting enlargement to Europe should be one of the current concerns given the rapidity it is spreading, finding favorable conditions in the European climate.

Halyomorpha halys, insect, spread, recognition, Italy, Romania

biology

Presentation: poster